package java_class_work.week03;

import java.util.Scanner;

public class Demo05 {
    public static void main(String[] args) {
        int number = -1;
        method(number);
        // assert number>0:"please input a number";
    }

    static void method(int num){
        assert num>0;
        System.out.println(num);
    }
}
